EP1223345A3 - Actuation arrangement for parts of vehicles pivotable about an axis - Google Patents

Actuation arrangement for parts of vehicles pivotable about an axis Download PDF

Info

Publication number
EP1223345A3
EP1223345A3 EP02450001A EP02450001A EP1223345A3 EP 1223345 A3 EP1223345 A3 EP 1223345A3 EP 02450001 A EP02450001 A EP 02450001A EP 02450001 A EP02450001 A EP 02450001A EP 1223345 A3 EP1223345 A3 EP 1223345A3
Authority
EP
European Patent Office
Prior art keywords
working
cylinder arrangement
working cylinder
pivotable
connecting line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02450001A
Other languages
German (de)
French (fr)
Other versions
EP1223345A2 (en
Inventor
Gerhard Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Hydraulik GmbH
Original Assignee
Hoerbiger Hydraulik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP1223345A2 publication Critical patent/EP1223345A2/en
Publication of EP1223345A3 publication Critical patent/EP1223345A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • F15B11/0445—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/003—Systems with load-holding valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024—Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20561—Type of pump reversible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/27—Directional control by means of the pressure source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • F15B2211/3051—Cross-check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3052—Shuttle valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41572—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and an output member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/61—Secondary circuits
    • F15B2211/613—Feeding circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • F15B2211/7054—Having equal piston areas

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

Betätigungsanordnung für um eine Drehachse (2) schwenkbare Teile an Fahrzeugen, insbesonders für Türen (1), mit zumindest einer mit dem schwenkbaren Teil gekoppelten gleichgängigen Arbeitszylinder-Anordnung (3) für beide Schwenkrichtungen, einem die Arbeitszylinder-Anordnung (3) versorgenden Arbeitsfluid-System mit Versorgungsleitungen (14, 15) zu jedem Arbeitsraum (4, 5) der Arbeitszylinder-Anordnung (3), welche Versorgungsleitungen die Arbeitszylinder-Anordnung (3) auch sperrbar mit dem Reservoir (8) für das Arbeitsmedium verbinden, und einem auf das Arbeitsfluid-System einwirkenden Steuerkreis, wobei im Arbeitsfluid-System zumindest eine Verbindungsleitung zwischen den in entgegengesetzter Richtung wirkenden Arbeiträumen (4, 5) der Arbeitszylinder-Anordnung (3) sowie ein Vorspannventil (24) vorgesehen sind.Actuating arrangement for parts on vehicles pivotable about an axis of rotation (2), especially for doors (1), with at least one with the pivotable part coupled working cylinder arrangement (3) for both swivel directions, a working fluid system supplying the working cylinder arrangement (3) with supply lines (14, 15) to each work area (4, 5) of the working cylinder arrangement (3) which supply lines the working cylinder arrangement (3) also lockable connect to the reservoir (8) for the working medium, and one on the Working fluid system acting control circuit, at least in the working fluid system a connecting line between those acting in the opposite direction Working spaces (4, 5) of the working cylinder arrangement (3) and a preload valve (24) are provided.

Um mit einer einzigen, einfach aufgebauten und mit einer geringen Anzahl von aufwendigen und teuren Bauteilen auskommenden Anlage eine sichere Stopp- und Haltefunktion zu gewährleisten, unabhängig von der Art der eingesetzten Vorspannventile, ist in der zumindest einen Verbindungsleitung (16, 17, 22) zwischen den Arbeitsräumen (4, 5) der Arbeitszylinder-Anordnung (3) zumindest ein diese Verbindungsleitung vollständig freigebendes oder sperrendes Schaltventil (23) in Serie mit einem Vorspannventil (24) eingesetzt.

Figure 00000001
In order to ensure a safe stop and hold function with a single, simply constructed system that manages with a small number of complex and expensive components, regardless of the type of preload valves used, there is at least one connecting line (16, 17, 22) between The working spaces (4, 5) of the working cylinder arrangement (3) are fitted with at least one switching valve (23) which completely releases or blocks this connecting line in series with a biasing valve (24).
Figure 00000001
EP02450001A 2001-01-12 2002-01-03 Actuation arrangement for parts of vehicles pivotable about an axis Withdrawn EP1223345A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT452001A AT410821B (en) 2001-01-12 2001-01-12 ACTUATING ARRANGEMENT FOR PARTS ON VEHICLES WHICH CAN BE SWIVELED BY A AXLE
AT452001 2001-01-12

Publications (2)

Publication Number Publication Date
EP1223345A2 EP1223345A2 (en) 2002-07-17
EP1223345A3 true EP1223345A3 (en) 2003-11-19

Family

ID=3565072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02450001A Withdrawn EP1223345A3 (en) 2001-01-12 2002-01-03 Actuation arrangement for parts of vehicles pivotable about an axis

Country Status (2)

Country Link
EP (1) EP1223345A3 (en)
AT (1) AT410821B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412112B (en) * 2002-09-30 2004-09-27 Hoerbiger Hydraulik PRESSURE VALVE WITH AT LEAST TWO SWITCHING STEPS AND HYDRAULIC ACTUATING ARRANGEMENT
CN1300473C (en) * 2004-04-08 2007-02-14 兰州理工大学 Hydraulic system for braking lifting platform and unloading when no load
DE102005031971A1 (en) * 2005-07-08 2007-01-11 Wilhelm Karmann Gmbh Hydraulic actuator assembly
ATE517264T1 (en) * 2006-04-24 2011-08-15 Inova Srl SYSTEM AND DEVICE FOR DISCONNECTING HYDRAULIC SYSTEMS
NL1031722C2 (en) * 2006-04-28 2007-10-30 Actuant Corp Hydraulic operating device for a closing assembly for an opening in a vehicle body.
DE102008018159B4 (en) * 2008-04-10 2012-11-15 Karosseriewerk Heinrich Meyer Gmbh Sectional door for commercial vehicles
CN101865184A (en) * 2009-04-14 2010-10-20 上海汇益液压控制系统工程有限公司 Direct-drive redundant hydraulic system for servomotor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334843A1 (en) * 1993-10-13 1995-04-20 Pacoma Hydraulik Gmbh Hydraulic activation device for a door on a motor vehicle
DE4342487A1 (en) * 1993-12-13 1995-06-14 Linde Ag Hydrostatic drive system with post=suction valve
DE4342309A1 (en) * 1993-12-11 1995-06-14 Linde Ag Open circuit hydrostatic drive system for vehicle
EP0803630A2 (en) * 1996-04-24 1997-10-29 HOERBIGER GmbH Hydraulic operating device
DE19641428C1 (en) * 1996-10-08 1998-02-26 Bayerische Motoren Werke Ag Device for pivoting lid of car boot

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5417011A (en) * 1994-02-23 1995-05-23 Keszthelyi; Laszlo Door opening mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4334843A1 (en) * 1993-10-13 1995-04-20 Pacoma Hydraulik Gmbh Hydraulic activation device for a door on a motor vehicle
DE4342309A1 (en) * 1993-12-11 1995-06-14 Linde Ag Open circuit hydrostatic drive system for vehicle
DE4342487A1 (en) * 1993-12-13 1995-06-14 Linde Ag Hydrostatic drive system with post=suction valve
EP0803630A2 (en) * 1996-04-24 1997-10-29 HOERBIGER GmbH Hydraulic operating device
DE19641428C1 (en) * 1996-10-08 1998-02-26 Bayerische Motoren Werke Ag Device for pivoting lid of car boot

Also Published As

Publication number Publication date
EP1223345A2 (en) 2002-07-17
AT410821B (en) 2003-08-25
ATA452001A (en) 2002-12-15

Similar Documents

Publication Publication Date Title
DE2142123A1 (en) Device for guiding a tool through a pipeline system
AT8986U1 (en) HYDRAULIC PRESSURE SUPPLY UNIT, AND ELECTRO-HYDRAULIC WORKING UNIT AND CLAMPING SYSTEM WITH SUCH A PRESSURE SUPPLY UNIT
DE3701211A1 (en) FLUID VALVE CONSTRUCTION
EP1223345A3 (en) Actuation arrangement for parts of vehicles pivotable about an axis
DE2043468A1 (en) Pump arrangement
EP1101692A3 (en) Hydraulic operating device
EP1010608A2 (en) Hydraulic damping system for the rotary motion of rotating joint between two vehicle parts of articulated vehicles, for example articulated buses
EP1162375A3 (en) Actuation arrangement for swivelling parts of vehicles
DE2648280A1 (en) LOAD PRESSURE CONTROL
DE2056424A1 (en) Device for controlling the boom arms and the loading shovel located on them of a front loader
DE3510283A1 (en) HYDRAULIC CONTROL VALVE, IN PARTICULAR SECTION VALVE WITH DUAL PRESSURE RELIEF
DE2518626A1 (en) HYDRAULIC STEERING
DE112014005086B4 (en) Connection block for connecting several lines in a vehicle and connection arrangement
DE3446496A1 (en) Device for securing rail-bound travelling gear
DE2647140A1 (en) Non-reversing hydraulic valve system - has slider with two pistons for load control and has return line
AT393870B (en) ARRANGEMENT FOR OPERATING HYDRAULIC OPERATING DEVICES OF A STONE DRILL ARM OR SIMILAR DRILL ARM CONSTRUCTION
EP0882919A3 (en) Hydraulic multiway valve, especially steering selector valve for multi-axle steered vehicles
DE2853420A1 (en) MECHANICAL-HYDRAULIC ANGLE CONTROL FOR THE RUNNER OF A JOINT TRAIN
DE10244362B4 (en) Hydraulic stabilization device for vehicles
DE102019210622A1 (en) Hydraulic control block and hydraulic axis with it
DE1680069A1 (en) Brake systems for tractors
DE2054361A1 (en) Agricultural and / or construction-related motor vehicle with hydraulic coupling devices
DE19745371C2 (en) Device for pressure medium transmission
DE961848C (en) Plain bearings for shafts, especially for rudder shafts and their hubs on ships
DE2058635A1 (en) Steering device for motor vehicles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20040112

17Q First examination report despatched

Effective date: 20040310

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040721